6644075312 has 20 divisors (see below), whose sum is σ = 14711881296. Its totient is φ = 2847460800.

The previous prime is 6644075261. The next prime is 6644075323. The reversal of 6644075312 is 2135704466.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29660939 + ... + 29661162.

Almost surely, 2^6644075312 is an apocalyptic number.

It is an amenable number.

6644075312 is an abundant number, since it is smaller than the sum of its proper divisors (8067805984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6644075312 is a wasteful number, since it uses less digits than its factorization.

6644075312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59322116 (or 59322110 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 6644075312 is about 81511.1974639068. The cubic root of 6644075312 is about 1879.9437239832.

Adding to 6644075312 its reverse (2135704466), we get a palindrome (8779779778).

The spelling of 6644075312 in words is "six billion, six hundred forty-four million, seventy-five thousand, three hundred twelve".